#include <stdio.h>

long factorial(int);

int main() {
	int i, n, c;

	printf("Enter the number of rows you wish to see in pascal triangle\n");
	scanf("%d", &n);

	for (i = 0; i < n; i++) {
		for (c = 0; c <= (n - i - 2); c++)
			printf(" ");

		for (c = 0; c <= i; c++)
			printf("%ld ", factorial(i) / (factorial(c) * factorial(i - c)));

		printf("\n");
	}

	return 0;
}

long factorial(int n) {
	int c;
	long result = 1;

	for (c = 1; c <= n; c++)
		result = result * c;

	return (result);
}
